Billing issue

Hello All,

While creating the billing system is throwing the error log: "Document 'XX' is incomplete so billing cannot be carried out".

When I check the sales order it is complete and there is no in completion log, but when I check at table level VBUP the Item data, item Del Data, & Item Bill.data is marked as 'A' not yet processed which is blocking the creation of billing.

Can anyone let me know why there is discrepancy at table level and transaction level and how to fix it structurally.

Thanks in Advance,

Ali